Update README.

README.md

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 # libreoffice-installer
 
-...installs LibreOffice on macOS.
+A macOS Package to install the latest stable version of
+[LibreOffice](https://www.libreoffice.org) for "business deployments."
+
+## Features
+
+It will (re-)install LibreOffice if the app...
+
+- is not installed at all
+- is outdated
+- has been installed from the Mac App Store (see below why)
+
+## Why this package?
+
+I need to manage LibreOffice on multiple Macs and keep it up to date.
+For business deployments one would normally use the Mac App Store version and
+install it automatically via a mobile device management (MDM).
+Unfortunately, this is not possible for our use case due to
+[Bug 153927](https://bugs.documentfoundation.org/show_bug.cgi?id=153927).
+This package automates the installation / update of LibreOffice from the
+official download page.
+
+## Usage
+
+Just download the package (`.pkg`) from the releases tab and double-click it or
+(better) deploy it via your MDM.